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Four green DDR4 server RDIMM modules with gold contacts

OWC

OWC 1TB (4x256GB) DDR4 3200 PC4-25600 CL22 8Rx4 288-pin 1.2V ECC Registered RDIMM server RAM

SKU CH-HYMW-W21S7

A 1 TB DDR4 ECC registered RDIMM kit of four 256 GB modules running at 3200 MT/s with CL22 latency and 1.2 V operation

Capacity 1TB (4 x 256GB)

  • Massive 1 TB capacity from four 256 GB modules
  • ECC registered design protects data integrity in servers
  • DDR4 3200 speed delivers high throughput
  • 288-pin RDIMM form factor fits standard server slots
  • JEDEC and RoHS compliant for warranty-safe upgrades

1TB ECC Registered server kit

This OWC kit supplies 1TB of DDR4 3200 PC4-25600 memory in four 256GB RDIMMs. It is built for workstations and servers that require ECC registered modules and octal-rank density. The modules run at CL22 latency and 1.2V. They replace Hynix HMAT14JXSRB120N and HMAT14JXSRB122N parts.

Check registered ECC requirement

Your platform must support DDR4 ECC registered RDIMMs with 8Rx4 organisation. Standard desktop boards cannot use registered memory. Mixing these modules with unbuffered or load-reduced DIMMs is not supported. Verify that your system accepts 288-pin registered modules before ordering.

Replaces Hynix HMAT14JXSRB120N/122N

This kit directly replaces the listed Hynix part numbers in compatible servers. The upgrade is worthwhile when you need maximum registered capacity per slot or when existing modules have failed. It is not suitable for systems limited to unbuffered or single-rank memory.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $5,929.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).

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Specifications

No published specifications for this item yet.

Other versions of this model

5 more in the same range

Questions about this item

What comes in the 1 TB kit and do I need anything else to install it?

The kit contains four 256 GB DDR4 3200 ECC Registered RDIMMs, giving 1 TB total. No extra parts are required if your server has free 288-pin DIMM slots that support registered memory.

How do I choose between the Hynix HMAT14JXSRB120N and HMAT14JXSRB122N versions this kit replaces?

Both Hynix part numbers are covered by the same 4 x 256 GB DDR4 3200 CL22 8Rx4 1.2 V specification, so the kit works for either without further selection.

What does the PC4-25600 rating mean for actual server throughput?

PC4-25600 indicates a peak transfer rate of 25 600 MB/s per module at 3200 MT/s; four modules in quad-channel configuration can scale proportionally in a compatible server platform.

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